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Stream Messages API

Send, retrieve, update, delete, and search messages and replies.

Stream Messages API is one of 19 APIs that Stream publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Message. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and an AsyncAPI specification.

This API exposes 6 operations across 3 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against a single base URL, https://chat.stream-io-api.com.

6 operations 3 paths 4 schemas 1 DELETE2 GET2 POST1 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://chat.stream-io-api.com
Authentication
HTTP Bearer, API Key
Resource Areas
1

Authentication & Security 2

Stream Messages API declares 2 security schemes for authenticating requests. It accepts HTTP bearer tokens (JWT) (JWT). An API key is passed in the query as api_key (ApiKey). By default, every request must be authenticated.

  • JWT — A Stream JWT sent in the Authorization header. Server-side tokens omit the userid claim; a Stream-Auth-Type: jwt header must accompany the request.
  • ApiKey — The application API key, sent as the apikey query parameter on every request.

Paths & Operations 6

Across 3 paths, the API surfaces 6 operations — 1 DELETE, 2 GET, 2 POST, 1 PUT. Each is listed below with its method, path, parameters, and response codes.

Messages 6

Send, retrieve, update, delete, and search messages and replies.

POST
/channels/{type}/{id}/message
Send a message
SendMessage 2 params body → 201400429
GET
/messages/{id}
Get a message
GetMessage 1 param → 200404
POST
/messages/{id}
Update a message (overwrite)
UpdateMessage 1 param body → 200
PUT
/messages/{id}
Partially update a message
UpdateMessagePartial 1 param body → 200
DELETE
/messages/{id}
Delete a message
DeleteMessage 2 params → 200429
GET
/messages/{parent_id}/replies
Get thread replies
GetReplies 1 param → 200

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are Message (9 properties), User (7 properties), APIError (5 properties), SendMessageRequest (1 property). Each schema is shown below with its type and property counts.

APIError
object
5 properties
Message
object
9 properties
User
object
7 properties
SendMessageRequest
object
1 property 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

getstream-messages-api-openapi.yml Raw ↑

Other APIs Stream publishes across the network.

Stream Activity Feeds API
Stream Video and Audio API
Stream Application API
Stream Campaigns API
Stream Channels API
Stream Devices API
Stream Members API
Stream Moderation API
Stream Permissions API
Stream Reactions API
Stream Roles API
Stream Threads API
Where this information came from

This is an independent, third-party profile of Stream Messages API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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